| Abbreviation | Definition |
|---|---|
| HEFCO | Hefner Company, Inc |
| HEI | Henderson Engineers Inc |
| HEIC | Honourable East India Company |
| HEIS | Home Emergency Insurance Solutions |
| HELM | Hierarchical Editing Language for Macromolecules |
| HEMC | Habersham Electric Membership Corporation |
| HEMC | Haywood Electric Membership Corporation |
| HEMC | Home Equity Mortgage Corp |
| HEP | Hankyu Entertainment Park |
| HEP | Hankyu Entertainment Plaza |
| HERO | Highglen Exploration and Research Organization |
| HES | Human Environmental Sciences |
| HESC | Higher Education Servicing Corporation |
| HESCL | Hubli Electricity Supply Company Limited |
| HESCO | Hyderabad Electric Supply Corporation |
| HESI | Health Education Services Inc |
| HESI | Health Education Systems, Inc. |
| HESI | Health Educations Systems Inc |
| HETI | Hurricane Engineering & Testing, Inc. |
| HETI | Hurricane Engineering and Testing Inc |